Inventors:
Edwin Foudriat - Yorktown VA
Kurt Maly - Virginia Beach VA
C. M. Overstreet - Virginia Beach VA
Frank Paterra - Norfolk VA
Sanjay Khanna - Norfolk VA
Assignee:
Old Dominion University - Norfolk VA
Center for Innovative Technology - Herndon VA
International Classification:
H04J 326
Abstract:
A combination of two new access methods for ring and unidirectional bus networks supports high data rate integrated traffic. The first access method provides access for asynchronous traffic. When a node senses the channel idle, it can begin to transmit. When it senses an incoming signal, it must stop transmitting in order to avoid a collision. But unlike other access protocols which abort the transmission when a collision occurs or is imminent, the process truncates the message in a fashion such that it can be resumed later when the channel again is idle. The system is called Carrier Sensed Multiple Access-Ring Network (CSMA/RN). The second access method provides support for synchronous traffic. This method implements one or more circulating reservation packets which permit a node to have reserved space when the special packet returns. The media access system is called Circulating Reservation Packet (CRP) system.